Ipamorelin is a pentapeptide and a synthetic ghrelin mimetic (acting as a ghrelin agonist) with high growth hormone (GH) releasing potency. Since it mimics ghrelin and binds to its receptors (GH secretagogues receptors) in the brain, it stimulates the release of GH in the pituitary gland; which leads to an increase in plasma GH levels, but also increased levels in GA tract, lungs, heart, liver, kidney and pancreas.

What differentiates Ipamorelin from other growth hormone releasing peptides is that it stimulates GH in a way that’s most similar to that of growth hormone-releasing hormone.